New submission from STINNER Victor <[email protected]>:
_PyInterpreterState_DeleteExceptMain() contains the following check:
PyThreadState *tstate = _PyThreadState_Swap(gilstate, NULL);
if (tstate != NULL && tstate->interp != runtime->interpreters->main) {
return _PyStatus_ERR("not main interpreter");
}
os.fork() is allow in subinterpreters and PyOS_AfterFork_Child() doesn't seem
to update runtime->interpreters->main.
Either we should update runtime->interpreters->main after fork in the child
process, or os.fork() should be denied in subinterpreters.
In bpo-37266, I denied the creation of daemon threads in subinterpreters. But I
had to revert this change: see bpo-40234.
----------
components: Subinterpreters
messages: 380891
nosy: vstinner
priority: normal
severity: normal
status: open
title: [subinterpreters] Deny os.fork() in subinterpreters?
versions: Python 3.10
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<https://bugs.python.org/issue42346>
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